Electrical and ...

A 0 – 10 V voltmeter has a little bit of bearing friction due to which its pointer can stay within ±1 division of the corrected/desired position. The voltmeter has 100 divisions and has no other error/inaccuracy.

The meter A has range of (0 – 150) V and multiplier resistance of 20 kΩ. The meter B has range of (0-300) V and a multiplier resistance of 50 kΩ. Both meters have basic meter resistance of 2 kΩ. Then

In a Wheatstone bridge, the minimum deflection is obtained with P = Q = S = 1 kΩ. P, Q and S are all 2% inaccurate resistance. P, Q are fixed value resistance. S is a decade resistance box which can be varied in steps of 1 Ω. Assume that P and S are the resistances of opposite arms.

The error in the measured value of R (in Ω) is ______

Four ammeters M₁, M₂, M₃ and M₄ with the following specifications are available. (Full scale, accuracy value as percentage of FS)

M₁ = 20 ± 0.10

M₂ = 10 ± 0.20

M₃ = 5 ± 0.50

M₄ = 1 ± 1.00

A resistor has a nominal value of 10Ω ± 0.1%. A voltage is applied across the resistance and the power consumed in the resistor is calculated from p = EI calculate the uncertainty in the power determination in each case when the measured values of E and I are

Two 180 V full scale PMMC type DC voltmeter having figure of merit of 25 kΩ/V and 50 kΩ/V are connected in series. The series combination can be used to measure a maximum DC voltage of ________(in V)

A plot of land has measured dimensions of 50 by 150 m. The uncertainty in the 50 m dimension is ±0.01 m. Calculate the uncertainty with which the 150 m dimension must be measured to ensure that the total uncertainty in the area is not greater than 150 percent of that value it would have if 150 m dimension were exact.